Objective To explore the elimination effect of radix Pulsatillae extracts on R plasmid of pseudomonas aeruginosa.Methods R plasmids of pseudomonas aeruginosa were isolated from the sputum of elderly patients suffering from respiratory infection,and the elimination test of radix Pulsatillae extracts on these plasmids was performed in vitro and in vivo.Results Being treated with the extracts for 24,48 and 72 h in vitro,the elimination rate of R plasmids was 0,1.8 %and 3.4 %respectively,while in SDS(sodium dode canesulphonate)control group the elimination rate was 0,0.8 %and 1.6 %respectively.Being treated with the extracts for 24,48 and 72 h in vivo,the elimination rate was 0,2 %and 12.8 %respectively,and 0 in the control group.Conclusions Both in vitro and in vivo,radix Pulsatillae extracts have an elimination effect on R plasmid of pseudomonas aeruginosa,and the effect in vivo is stronger than that in vitro.

The aim of this study is to investigate the effects of electrical stimulation ES) on the induction of rat bone marrow mesenchymal stem cells (rBMSCs) to differentiate into cardiomyocyte-like cells in vitro. The third or fourth-generation of the rBMSCs was randomly divided into three groups, i. e. ES group, 5-Azacytidine (5-Aza) group, and control group. Those in the ES group with complete medium were exposed to 1,2,4 and 6V, 2Hz, 5ms ES for 2h everyday,lasting for 10d. Those in the 5-Aza group were induced by 10 micromol/L 5-Aza for 24h, then the medium was changed to complete medium without 5-Aza. Those in the control group were only cultured with complete medium. The growth status and morphological features of rBMSCs were observed by inverted phase microscope. The mRNA expressions of GATA4, a-actin, ACTN2 and TNNT2 were determined by Real-time fluorescent quantification PCR, and the protein expression of TNNT2 was detected with immunofluorescence staining. The results showed that the mRNA expression level of the GATA4, a-actin, ACTN2 and TNNT2 and the protein expression level of the TNNT2 were significantly higher in the ES group and 5-Aza group, compared to those in the control group(P<0. 05). It suggested that ES could induce rBMSCs differentiation into cardiomyocyte-like cells in vitro.
Animals ; Bone Marrow Cells ; cytology ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; Electric Stimulation ; Female ; Male ; Mesenchymal Stromal Cells ; cytology ; Myocytes, Cardiac ; cytology ; Rats ; Rats, Sprague-Dawley

Objective To investigate the efficacy of hypofractionated radiotherapy(HFRT)com-bined with programmed cell death protein-1/programmed cell death ligand-1(PD-1/PD-L1)inhibitors in sequential with granulocyte-macrophage colony-stimulating factor(GM-CSF)and interleukin-2(IL-2)for the treatment of advanced metastatic solid tumors.Methods A prospective single-center single-arm study was designed for patients failed standard treatments for advanced refractory solid tumors in the Department of Radiotherapy of Jiangyin Hospital affiliated to Nantong University,and eli-gible patients were given quadruple therapy:HFRT(5 to 8 Gy × 2 to 3 f)once every 21 days for at least 2 cycles;200 μg GM-CSF from the 1st to 7 th day of radiotherapy,and 2 million IU IL-2 from the 8thto 14th day.Within 1 week after the completion of HFRT,PD-1/PD-L1 inhibitors were used for treatment.The above treatment strategy was repeated.GM-CSF and IL-2 were treated for 6 cycles,fol-lowed by maintenance with PD-1/PD-L1 inhibitors until disease progression(PD)or intolerable toxici-ty occurred.Objective response rate(ORR)and treatment-related adverse events were analyzed.Results From January 9,2021 to June 15,2023,totally 40 patients were enrolled,with follow-up of 2.8 to 31.0 months and a median follow-up of 9.9 months,and 39 patients(97.5％)completed at least one time tumorsite evaluation within the non-radiotherapy target area.97.5％of patients had canc-ers,2.5％had soft tissue sarcomas,and 20.0％had received immune checkpoint inhibitors(ICIs)at baseline check.The ORR was 30.8％,and the disease control rate(DCR)was 71.8％;the ORR for non-small cell lung cancer(NSCLC)was 28.6％,and the DCR was 57.1％;the ORR for colorectal cancer was 14.3％,and the DCR was 71.4％;the ORR for gastric cancer was 16.7％,and the DCR was 66.7％;28 patients(70.0％)had treatment-related adverse events(TRAE),4 patients(10％)had TRAE≥level 3,and the most common types of TRAE were fatigue,fever and hypothyroidism.Conclusion The treatment of HFRT combined with immune checkpoint inhibitors in sequential with GM-CSF and IL-2 is well tolerated and toxicity accepted in patients with advanced metastatic solid tumors,which may provide a new method for salvage treatment of patients with ad-vanced metastatic solid tumors.

Objective To investigate the efficacy of hypofractionated radiotherapy(HFRT)com-bined with programmed cell death protein-1/programmed cell death ligand-1(PD-1/PD-L1)inhibitors in sequential with granulocyte-macrophage colony-stimulating factor(GM-CSF)and interleukin-2(IL-2)for the treatment of advanced metastatic solid tumors.Methods A prospective single-center single-arm study was designed for patients failed standard treatments for advanced refractory solid tumors in the Department of Radiotherapy of Jiangyin Hospital affiliated to Nantong University,and eli-gible patients were given quadruple therapy:HFRT(5 to 8 Gy × 2 to 3 f)once every 21 days for at least 2 cycles;200 μg GM-CSF from the 1st to 7 th day of radiotherapy,and 2 million IU IL-2 from the 8thto 14th day.Within 1 week after the completion of HFRT,PD-1/PD-L1 inhibitors were used for treatment.The above treatment strategy was repeated.GM-CSF and IL-2 were treated for 6 cycles,fol-lowed by maintenance with PD-1/PD-L1 inhibitors until disease progression(PD)or intolerable toxici-ty occurred.Objective response rate(ORR)and treatment-related adverse events were analyzed.Results From January 9,2021 to June 15,2023,totally 40 patients were enrolled,with follow-up of 2.8 to 31.0 months and a median follow-up of 9.9 months,and 39 patients(97.5％)completed at least one time tumorsite evaluation within the non-radiotherapy target area.97.5％of patients had canc-ers,2.5％had soft tissue sarcomas,and 20.0％had received immune checkpoint inhibitors(ICIs)at baseline check.The ORR was 30.8％,and the disease control rate(DCR)was 71.8％;the ORR for non-small cell lung cancer(NSCLC)was 28.6％,and the DCR was 57.1％;the ORR for colorectal cancer was 14.3％,and the DCR was 71.4％;the ORR for gastric cancer was 16.7％,and the DCR was 66.7％;28 patients(70.0％)had treatment-related adverse events(TRAE),4 patients(10％)had TRAE≥level 3,and the most common types of TRAE were fatigue,fever and hypothyroidism.Conclusion The treatment of HFRT combined with immune checkpoint inhibitors in sequential with GM-CSF and IL-2 is well tolerated and toxicity accepted in patients with advanced metastatic solid tumors,which may provide a new method for salvage treatment of patients with ad-vanced metastatic solid tumors.

Objective:To evaluate the safety and efficacy of ultrasound-guided percutaneous negative pressure suction and minimally invasive rotatory excision technique for the treatment of complex encapsulated lesions.Methods:A total of 48 patients(48 lesions) with complex encapsulated lesions who underwent ultrasound-guided percutaneous negative pressure suction and minimally invasive rotatory excision technique at Xi′an Chest Hospital from January to October 2023 were retrospectively enrolled, including 39 cases of encapsulated abscess, 7 cases of encapsulated effusion, and 2 cases of encapsulated haematoma; the distribution of the bacterial flora of the abscesses were as follows: 24 cases of tuberculous abscess, 14 cases of bacterial abscess, 1 case of bacterial combined bacterial-fungal abscess, and 7 cases of encapsulated effusion were tuberculous pleurisy, and the clinical data were analysed retrospectively. The maximum upper and lower diameters, right and left diameters, and anterior and posterior diameters of the lesions were measured by ultrasound before and after the operation. The patients′ various biochemical indicators (C-reactive protein, white blood cell count, neutrophil count, erythrocyte sedimentation rate) were detected. The intraoperative and postoperative complications, postoperative outcomes, and postoperative clinical symptoms were recorded.Results:Of the 48 patients, 39 were cured and discharged after negative pressure suction and rotatory excision technique, and 9 patients were cured and discharged after surgical incision and drainage of the lesions. The overall effective rate of negative pressure suction and rotatory excision treatment reached 81.25%, and the average number of days of tube placement was (11.81±7.22) days, and the average number of days of follow-up was (35.77±19.39) days. Compared with preoperative values, the upper and lower diameters, the left and right diameters, and the anterior and posterior diameters of the lesions were all reduced after operation [5.80 (4.95, 7.95)cm vs 8.00 (6.00, 11.82)cm, 4.00 (3.25, 5.00)cm vs 5.85 (4.52, 7.65)cm, 1.80 (1.00, 2.90)cm vs 3.40 (2.50, 6.15)cm, all P<0.01]; and postoperative C-reactive protein, white blood cell count and neutrophil count all decreased (all P<0.05). Before operation there were 31 cases of local swelling, 16 cases of pain, 12 cases of activity limitation, 12 cases of fever, 7 cases of chest tightness, and 6 cases of shortness of breath, and during postoperative follow-up, there were 4 cases of local swelling, 5 cases of pain, and 4 cases of activity limitation. The symptoms of fever, chest tightness, and shortness of breath all disappeared, and there was a statistically significant difference between preoperation and postoperation (all P<0.05). There were no adverse events or complications associated with the intraoperative and postoperative follow-up of negative pressure suction and rotatory excision treatment. Conclusions:Ultrasound-guided percutaneous negative pressure suction and invasive rotatory excision technique for the treatment of complex encapsulated lesions can significantly reduce lesion size, reduce inflammatory response and improve patient symptoms, which is a safe, effective and minimally invasive technique.